<template>
  <view class="ui-switch" :class="[{ disabled }, ui]">
    <view class="ui-switch-wrapper" @tap="clickSwitch">
      <view class="ui-switch-input"
            :class="[{ 'ui-switch-input-checked': tempChecked }, tempChecked ? bg : '', text, size]"
      />
    </view>
  </view>
</template>

<script>
export default {
  name: 'MuiSwitch',
  props: {
    ui: {
      type: String,
      default: ''
    },
    bg: {
      type: String,
      default: 'ui-BG-Main'
    },
    text: {
      type: String,
      default: ''
    },
    checked: {
      type: Boolean,
      default: false
    },
    size: {
      type: String,
      default: 'sm'
    },
    disabled: {
      type: Boolean,
      default: false
    }
  },
  emits: ['change'],
  data() {
    return {
      tempChecked: false
    }
  },
  watch: {
    checked(val) {
      this.tempChecked = val
    }
  },
  created() {
    this.tempChecked = this.checked
  },
  mounted() { },
  methods: {
    clickSwitch() {
      this.tempChecked = !this.tempChecked
      this.$emit('change', this.tempChecked)
    }
  }
}
</script>

<style lang="scss">
.ui-switch {
  display: inline-block;
  cursor: pointer;

  .ui-switch-wrapper {
    display: inline-flex;
    align-items: center;
    vertical-align: middle;
  }

  .ui-switch-input {
    appearance: none;
    position: relative;
    width: 47px;
    height: 26px;
    outline: 0;
    border-radius: 16px;
    box-sizing: border-box;
    background-color: rgba(119, 119, 119, 0.3);
    transition:
      background-color 0.1s,
      border 0.1s;

    &:after {
      content: ' ';
      position: absolute;
      top: 0;
      left: 0;
      border-radius: 200px;
      transition: transform 0.3s;
      width: 20px;
      height: 20px;
      margin: 3px;
      background-color: #fff;
    }

    &.ui-switch-input-checked {
      &:after {
        transform: translateX(21px);
      }
    }
  }

  &.disabled {
    cursor: not-allowed;

    .ui-switch-input {
      opacity: 0.7;
    }
  }
}
</style>
